Return-speed check for measuring machines



' Febo 16 19266 VANDERVELD K FOR MEASURING MACHIHES RETURN SPEED CHEC Original Filed Feb. 26, 1923 Sheets-Sheet 1 Fabe $2655., 1,573,58Q

. A. VANDEJRVELD RETURN SPEED CHECK FOR MEASURING MACHINES ()rigina'l Filed Feb. 26, 1925 Sheets-Sheet 2 In uanfe finfh mqummm klffornegi Fwizo H23 fl A. VANDEIRVELZI} RETURN SPEED CHECK FOR MEASURING nmcrmms firiginal Filed 19255 i Sheets-Sheet 3 Feb. 16 E526,

A. VAN DER'VELD a RETURK SPEED CHECK FOR MEASURING MACHINES Driginal Filed E25 Sheets-Shaw 4 Patented 1 etc. 15, 13552 59 ANTHQNY VANDERVELD, OF GRAND RAPIDS, MICHIGAN RETURN-SPEED CHECK FOR IMEASUEING IVIACHINES.

3e it known that l. .\.\"ritoNr :m-:n viitin. a eitiZen ol" the l'nited t tates of ftmer it'a. residing at (irand Rapids. in the eounty of Kent and State ot )liehigan. have invented eertain new atrsl useful lmprovements in Return-Speed (heeks for ?\ltttHltl'- in ;\laehines: and I do hereby deelare the following to be a full. elear. and exaet deseript'ion of the invention. sueh as will enable Others skilled in the art to whieh it. appertaiiis to make and .use th same.

This invention relates to eloth or ribbon measuring maehines and is eoneerned with improvements in the. eonstruetion diselosed in my Patent No. 1.420.612, issued June 2H, 19212. In sttth. maehine a mea:-'urin roller is aetualed by the eloth or ribbon measured and in its movement tensions a spring whieh serves to return the said measuring roller aetuated thereby to initial zero position when the roller is released and tree to return. lartieularlr, when the amount tIl(;l need is eonsiderablo in a measuring operation, the spring is. tensioued to a relativelv high degree and the return ot the parts to initial position is l'ast and a eonsiderahle momentum is prodneed in the moving parts whit-h must he overeome and obviated hetore the met-hat is brought to a eons plete stop at lllllltl posit on. and in the struet'ure shown in my patent. aforesa d. shoek absorbing applianee is used ha\ii viel tin"; tilenttsflo absorb the shot'k ol' sto ping'themeehanism. This shot-k absorhimr met-hanism is praetieal tor the purpose but. there is eonsiderahle rebound.and movement llrtt'li and forth ot'the met-hanism to and trout initial /ero p t ition hetore it tomes to rest at stieh pos ion. It is a primary ohjeet and purpose of the present invention to provide an automatie brake whielt is in eti'eetive during the major part ot' the re turn of the part of the meehanism to original position. but I \vhieh is automatieall. v brought into serviee as the parts approaeh their initial position to aet thereon and eheek the speed so that when the initial zero position is reaehed. the mechanism is near-l stopped and the momentum thereof is praetieall all absorbed. This allows the return of the parts to original position at, as high a speed as the sprin can drive them until the end of the return run is ap proaehed. the brake then aeting: to cheek the speed and tiring it down to a point s ueh that the stoppin; of the mechanism at initial zero position is aeeomplished without jar or rebound of the parts and without loss of time in brin; in the meehanisni to a stop. in tat-t the speed of return of the meehanism is at a maximum at all times exeept for the final portions thereof. and the eheeking ot' the speed at sueh points is a time saver in that when the stopping is done. no oseillations ot'the met-hanism oe eurs but the stopping is Completed at once. lily invention eonsists in many novel eonstruetions and arrang'tanents of parts for ell'eetivelt 2tt't'()lll1)li.\'l1lll;l' this result as will tull v appear as understanding of the invention'and the eonstruetions embodying the same is had t'rotn the following (lseription. taken in eonneetion with the aceompan ving drawings. in whit-h,

l iez t is a longitudinal ve through with in al set-lion the maehine made in accordance invention.

Fin. 2 is a fl'tt;1'lll01ltltl' like seetion showing the parts as the same appear when the nu @anism is returning at full speed to initial position, the parts aown in Fig. l heing at sat-h initial po. tion.

Fig". i is av like view with the parts approaehing' initial zero position and with the brake hein e brought into aetion.

Fig. -l is a l'ragmentary longitudinal veriit-al seetion through the brake mechanism and stop means assoeiated therewith.

Figs. 5 and U are transverse vertical sectionsthrough the maehine, taken on the planes of lines 5---5 and 6-(5, respectively ol' Fig.1.

l-ig. T is an elevation of the pivotally mounted and depending brake member, and

Fig. R is a like view of the stop member assoeiated therewith.

Like reference characters refer to like parts in the different tig g'urcs'oi the drawings.

In the construction of the machine, a base 1 is used ha vine side flanges extending up 'ardly to which spaced apart vertical sides 9 are secured at their lower edges. Similarly a rear vertical end 3 is secure-1i and a front plate -'l is disposed between the front ends of the side plates 2 and connected thereto. This makes a supporting frame on whiclrthe mechanism is mounted, the whole being covered and enclosed by a covering casing 5 having openings with glass therein for disclosure of the measuring and At the I computing indicia of the machine. lower front portion of the machine a table member (5, completing the casing is posior ribbon is to be introduced for measurement.

The measuring roller 8 is located hori-- zontally over thetable 6 and is secured on a horizontal shaft 9 suitably inpunted for rotation at its ends in bearings carried on the end plates 3 and 4. Below tire measuring roller :1 presser roller 10 is mounted in parallelism to the measuring roller-and is adapted to press the cloth or ribbon against the roller 8 when actuation of the machine by the cloth or ribbon is to take place, said presser roller and its mounting being housed under the table 6. The specific manner of operating this presserroller intoand out of operative position is not new in'the present invention and is not shown and described, being fully outlined in my patent above noted. it is enough to understand that the prcsser roller in operative position. presses the cloth or ribbon against the measuring, roller so that on drawing the cloth or ribbon longitudinally between the rollers, the measuring roller is driven by the cloth, thereby operating the mechanism associated with thesaid measuring roller, and that the presser roller is adapted to be moved away from the measuring roller to free the cloth for removal andpermit the'measur'ing roller to return to original or initial position.

At the rear end portion of the shaft 9 a pinion 11 is fixed in front of the end plate 3 and is in mesh with an idler 12 mounted on'the plate it in turn cngaging with a gear 13 which, together with a smaller gear or pinion 14 located in front of gear 13 and attached thereto, is loosclymounted on and at the rear 'end of a'shaft 15 positioned horizontally. between the plates 3 and 4 and rotatably mounted at its ends on said plates.

The gear i l meshes with a gear 16. said gear and a pinion 17 in front thereof being: attached to a-sccond shaft '18 paralleling the shaft 15 and similarly mounted. An indicat ing drum 19 is carried on shaft 18 near its front end for indicating lengths of cloth passed through the machine, the dimensions of the measuring roller and design of the gearing being such that shaft 18 makes one complete revolution with each unit length of the cloth or like material passed between the rollers 8 and 10. 7 A pinion 20 is also secured on the shaft 18 and drives another pinion 21 on the end of one roller :32 of a pair of rollers on which acomputing chart 23 is mounted for movc ment in accordance with the amount of cloth passed through the machine and as i'ul out-lined in my prior patent. A gear 2-1 s fixed on shaft 15. being in. engagement with and driven by pinion 17. A coiled spring 25 is secured at one end to the gear and is located around the shaft 15, at its opposite end being secured to any suitable stationary member or bracket, as shown at 25 whereby when the mechanism is operated, the spring is tensioned and aceuniulates power which serves to drive the mechanism in the reverse direction when free to do so, returning the same to original position.

Adjacent the rear portion of the shaft 9 it is reduced in diameter, making a part i)". A disk 26 fixed to a hub 27 secured on the reduced portion 9 of the shafhimd said disk at a plurality of spaced apart points has outward extensions from which pairs of ears :28 are bentat right angles to the rear. Between each of the pairs of ears members .29 formed from sheet metal and substantially channel-like in cross section are positioned and pivotally mounted'on pivot pins 30 extending between the cars, said members cxtending to the rear from the pivots. The sides or flanges of the members 25) are formed near the pivots wit-h inwardly extending lugs 31 which enter an annulargroove in a collar 32 mounted on the part 9 and aressez by a light spring 33 against the hub 2 7, the spring being located between the pinion l1 and said collar. One of the extensions on the disk from which the ears 28 are turned is formed with a forwardly turned stop lug 34. It is evident that when the shaft 9 is rotated rapidly there is a tendency for the members ly for a distance from the plate 37 and then turned downwardly at right angles making 29 to throw outwardly and turn about their iii) pivot rod-35, thering portion 38 v over the inner ends of the members 21) and .an arm which at its lower end is divided -'to make, two downwardly extending parts- 41. one passing at each sideot the sha it i A spring 4U" is attached at one end to the arm and at its other end to a lip Struck from one of the side plates 2, as shown in Fig. 4. said spring: normally serving to draw the .plate 37 forwardly so as to Remove the ring portion. 38 away t'lom'the outwardly throwing members 21). Accordingly the mechanism is normally tree to rotate with out any a tion being imported t the mem bers 29 to t'rictioiially stopihe same and the shaft on which the are mounted from rotation.

From the upper side of the base i an in te rral block or post? 1 extends upwardly, it havin; a horizontal member i). cat therewith and extending: into the end of the memo tiring roller parallel and under the shaft E). The shaft 9 is threaded for the intermediate portion of its length and a bloei: 43 is slidahly mounted til. traverse guides ii in the upper side of thc post l and the member 4:3

under the shaft, the upperside of said block being. recessed and threaded to engage with the threads on the shaft, making in-etl'ect a half-nut which moves back and fi orth with the rotation of the shaft 9 in different directions, the same moving forwardly Whenthe machine is operated and returning on return of the parts to initial position. 'it will he noted that when the machine is returning to initial position after,a length ot clothi or like material has been passed there through and measured, as the mechanism approaches such initial position, the bloel;

or hall nut 43 comes against the depending,-

parts 41, serving to tilt the plate 37 and its lower ring portion as to the rear about passing:

engaging friction-ally with the outer sides thereof, this serving to check or brake the speed of rotation of the mechanis n. in Fig. 2, the outwardly flungposition of the members 29, as the same appear with. the mechanism rotating at full speed in its return toinitial position. the menibers 29 being thrown outwardly through centrifugal action. In Fig. the braking action of the ringportion 88 mils engagement. with the said members 29 is illustrated, the frictional engagement of said members with the ring part 38 rapidly checking the rotative speed but speed as a r of the shaft 5) and causing a quick gradual diminishing oi the proach is made to the point where the nia- Cit) chine must stop at zero position.

After the return speed of motion of the machine is thus checked, the absolute stop' "IHGGlHJLDISDI=. f01' stopping the machine at an exact point or at zero position is brought into use. Tins stop mechanism incindes an irregularly shaped member formed from sheet (:ee Fig. 8) positioned at ananglc to each.

other making a substantially inverted V shaped form. the lower ends of the sides 4.; and i being provided with horizontally ex tended lugs 47 which pass through openings in the opposite sides oi the supporting i'raiiic. the connection being loove to permit, a limited tilting movement of said irregula'rlv shaped member about the lugs ii as pivots. At the under side of the apex of the member a lltL' it; is turned 'rearwardly. extending toward the dish 2o. Au arm 1 is pivotally mounted at one end at, 50 at the apex ot the said member, a spring :31 lieinc' connected to the free end of the arm and to the side it? in arm 52 extends downwardly from the arm l! at a point between its ends. the .-prin; 5i. :ervine to bring the lower end of arm 52 against. the lug: 48. At a point above the lower end of said arm 5-2, an oli-set linger 53 is struck. being so located that when the stop mechanism is moved to proper position it interposes in the path of movenientot the .IOP lug PA on the disk 20. A. spring 54 (see Fig. 4) is attached to the irretridarly shaped member at one end and at the otlieiuto the lip 2 aforesaid, the normaltende'uev oi which is to draw the said I member forwardly-so that lug 3i may rotate -parts :il against. a wideu'ed portion l-(W'ot the side t; of the irregularly shaped memher. 'liQI'QU JLH the said 'memberis tilted to t'herear and the lug 5 shortly brought into the paili oi movement of the lug Si which, striking against said lug 53 stops the rotation of the shaft 9 conipletelly'. Spring Di. of course serves to permit a slightly yielding or shock absorbing stop {oi the moving parts so that immediate and rigid stopping with re ultant strains is obviated. But. pizieticrd y immediately the mechanism is stopped at an exact initial or original zero position of the machine from which point niezisurenieut oi the cloth or ribbon inthe machine-is to start.

This construction is comparatively simple, exceptionally durable and serviceable and not liable to get out, of order. The return of the iile'xhrinh'm alter a measurin; oporation to origiualiuilial position may be at high speed wit ring of time. said speed being: autom t.l(';l2l checlvcd just. before reaching original stopping position, with a positive stop to stop the mechanism at a p eiloleriiiiiieil original poaition from which point. all memurean-nt of cloth or like mm terial starts. The parts oi the nun hine novel in this invention are formed from sheet adapted 'to be driven by! contact of clothas described.

4. In a machine of-the class described, a.

metal ol iiell i at low cost of manufacture, Inetecy way 'tl e automatic brake brought into action at thislash-portion of the return movement of the mechanism has proved particularly satisfactory and practical. The appended claims define the invention and all forms of strue ll'C homing; within their" scope are to be c lnsidened as comprehended by my lIIVCHllOI I.

I claim: I 1. 1n a cloth measuring maehine, a roller lengthwise therethrough, means tensioned.

by the operation of the mechanism by said material tending to return. the mechanism to initial position when free lode so; and means normally inope'ative auton'iatieally moved to operative. position slightly prior to the time the mechanism reaches said initial position for checking and slowing the speed of movement of said lllQCl'lflIllSlll to said initial position, substantially as described 13. In a machine of the class described, a

roller adapted to be driven by contact of cloth therew th drawn thereby a shaft on which the roller is fixed, members mounted on the shaft and adapted to be thrown outwardly through centrifugal torce on rapidrotation of the shaft. spring: means tensioned by the driving of the roller and acting to return the roller and shaft to initial start-.

ing position when it'reeto do so, and means normally out of operative engagement with said members but moved to frietiona'llyengage therewith slightly prior- 10 the timetho said rollerand shaft reaeh said initial starting position on return whereby the same are checked and slowed in speed, substantially measuring roller against which cloth or like material is pressed and'by which it is drawn to drive the roller, mechanism operated by the rotation of the roller, e threaded shaft on which the roller is secured included in said mechanism, member engaged with the shaft and movable along'the same during the operation of the machine, spring means tensioned by the operation of the machine forjreturning the same to initial position when free to do so, means mounted on the shaft, and means inovably mounted wardly on rotation of the shaft,

awrrsse i'rietional contact of cloth or like material therewith, a threaded shaft on which the roller is mounted, a spring operatively con neeted with the shaft for tensioning thereby so that the spring will return the 'shaft and atnu-hed rollerto initial starting pohtion when free to do so, a disk on the shaft, a plurality of members pivotally connected with the, disk and substantially paralleling the vshaft, said members moving. outwardly on rapid rotation of the shaft, :1 member ongaged with the threaded shaft and movable along the same. on rotation thereof, means located around the disk and movably mounted to more into or out of enga einent with said members on the disk, y1eldin" means normally moving said means urban the dish out of engagement'with said memhers. said means around the disk being'auto matieally mm ed to engaging position with said members on the disk by said shaft engaging inei'nber as it approachesits initial starting position, substantially as described.

(5. In a machine of the class described, a

measuring roller adapted to bo driven' by frictional contact of cloth therewith, a threaded shaft on which the roller is fixed, a. spring, means between the spring and the shaft whereby rotation of the shalt in one direction tensions the spring, a disk on the shaft, a plurality of members pivotally connected to the disk adjacent one end and extending substantially parallel to the shaft when at rest, said members swinging outa member engaged with the shaft and moved lengthwise thereof when the shaft, is rotated, a

plate pivotally mounted to swing on a hori-' zontal axis-transverse and, above the shaft, said plate having a rin -shaped portion to pass around the disk'a-nd members attached thereto, yielding means normally drawing said plate in one direction to bring the ring shaped. port-ion away from operative e'n-; gagement with said members, and means attached to the plate'against which the member engaged with the shaft presses to move the said plate into position for the ring-f shaped portion theroofto embrace the said members on the disk and frictions-11y check the speed of rotationoi the shaft, substan tially as described.

"i In a machine of the class described, a

support including a I base and two side plates and two end plates attached to and,-

.. .aaraseo extending verticallytherefrom, a shatt ro- 'tatably mounted horizontally between the end plates, means for driving, the shaft in one direction. spring means tensioncd by the rotation of the shaft in said direction for returning itto initial position when free to do so. devices carried on the shaft adapted "ii-ow outwardly through centrifugal acon rapid rotation of the shaftQmeans ibly mounted adjacent said devices for Increment into and out of operative engagement. tnerewith, yielding means normally holding said means out of engagement with said devices, and means movable by the shaft, int-o ei'ig 'agement with said movably mounted mean to move the same into engaging position with respect to said devices on return re '0 movement of the shaft and at a point tly prior to initial starting position an. reached by the shaft.

8. Lin machine of the class described, a measur roller, a rotatably mounted shaft on which the roller fixed, said rollerand shaft being adapted to be driven in one direction by frictional contact of cloth drawn by and against the roller, means tensioned by the rotation of the roller and shaft in said direction normally tending to return the same to initial starting position and returning the same Whenfrce to do so, means normallyheld in inoperative position for engaging Withmeans on the shaft immediately prior to its arrival to initial starting position to check the speed. of rotation of the shaft on its return movement, and means for automatically moving said engaging -means into operative position *innnediately prior to the arrival of the shaft and roller to initial starting position, substantially as.

described.

9. A machine having the elements-en combination defined in claim 8, combined with means for stopping the shaft at said initial starting position immediately after said speed of rotation thercot has been checked.

10. A machine having the elements in combination defined in, claim 8, combined with movably mounted stopping means, means normally holding the stopping means away from operative position, said means which automatically moves the engaging means into operative position, on further Il'lUYGlllOIlt automatically moving the stopping means into operative position to stop the shaft at initial starting position.

ll. in a machine of the class described, mechanism adapted to be driven in one direction by cloth .or like material being drawn lengthwise therethrough, said mechanism including yielding means tensioned by the operation of the mechanism by said material whereby the mechanismreturns to initial starting position when free to do so.

means normally inoperative automatically moved to operative posii ion slightly prior to the time the mechanism reaches said initial starting position on its return for checking and slowing the speed of movement of the mechanism thereafter to initial starting position, a movable mounted stopping means automatically moved to operative position immediately after the accoiuplishment. o't the checking and slowing of said speed of n'iovement, and yielding means connected with the stopping means normally tending to hold it in inoperative position, substantially described.

ii in machine of the class described, a rotatably mounted shaft, a measuring roller thereon adapted to. be driven by frictional contact of cloth or like material drawn thereby, spring means 'tensioned by the rota-- -means normally moving said member away trom the stop lug, means for moving said member toward the lug substantially at the time the shaft reaches starting position on its return movement, and means on said member moved into the path. of movement oifsaid stop lug to stop the shaft from movement at initial starting, position.

13. In a machine 01" the class described, a base, sides and ends carried by the base, a shaft mounted 'lor rotation 'on and between the ends, a member attached to the shaft provided with a projecting stop lug, means for rotating the shaft in one direction, sprin means for returning the shaft to initial position, a member mounted for limited tilting movement on and between the sides, a spring normally moving the. member away from the stop lug, a member movable along the shaft. as it is rotated said member on the return movement of the shaft engaging; againstthe member to move it toward the stop lag, and means on said tirst'member moved-into the pathol" movement of said stop lug whereby the shaftis stopped at a predetermined initial position.

llfl'n a machine of the class described, mechanism drivenby cloth or like material drawn therethrouglrin one direction and includingspring means for reversing the direction of movement of the mechanism when free to do so, stop means for stopping; the mechanism at a predetermined point on said return movement of the mechanism, and

(li'awn therethrough in one direction, means for returmng the mechamsm to lnltlal posijnon when free to do so, and means for checking the speed of movement of the re-' 5 turn of the mechanism to initial positien shghtly pnor to the arrival to mltlal 0S1 1011, the mech amsm bemg'othez wlse entlreiy free et a1 other times t0 move either under the mfiunce of the refiurn means 01' when actuated by thecloth or like material. 10

In testimony whereof I ANTH NY VANDERVELD. 

